Thanks to cheap travel and the rise of the Internet, scientists find it easier than ever to work together.
由于旅行成本的下降和互联网的兴起，科学家们比以往任一时期都更容易进行合作。
2
The ease of travel and communication, combined with the looser borders, gives rise to endless crisscrossing streams of wanderers and guest workers, nomadic adventurers and international drifters.
旅行和交流的便利，再加上更宽松的国界，使得游者、员工、流浪旅行者和无国籍漂流者络绎不绝的来回穿梭。
3
Population and wealth will continue to grow. Demand for travel will rise, and tolls will go up.